Fuel gauge



FIG. 1 is a top, front and left side perspective view of a fuel gauge showing our new design;

FIG. 2 is a bottom, rear and right side perspective view; and

FIG. 3 is a top, front and left side perspective view of another embodiment of our new design of FIGS. 1-2, the bottom being substantially similar to FIG. 2. 

The ornamental design for a fuel gauge, as shown. 